#!/bin/sh

set -e

# Clone Minetest
rm -rf minetest
git clone https://github.com/minetest/minetest.git
cd minetest
git clone --depth 1 https://github.com/minetest/minetest_game.git games/minetest_game

# Get Version
DEB_VERSION="$(git describe --tags --dirty)"

# Clone Irrlicht
git clone --depth 1 https://github.com/minetest/irrlicht.git lib/irrlichtmt

# Configure Irrlicht
cd lib/irrlichtmt

disable_feature() {
    sed -i "s/^#define $1.*\$//g" include/IrrCompileConfig.h
}
enable_feature() {
    sed -i "s/^#ifdef NO$1.*\$/#ifndef $1\n#define $1\n#endif\n#if 0/g" include/IrrCompileConfig.h
}

disable_feature _IRR_COMPILE_WITH_OPENGL_
disable_feature _IRR_COMPILE_WITH_OGLES1_
disable_feature _IRR_COMPILE_WITH_WEBGL1_
disable_feature _IRR_COMPILE_WITH_SOFTWARE_
disable_feature _IRR_COMPILE_WITH_BURNINGSVIDEO_
enable_feature _IRR_COMPILE_WITH_OGLES2_
enable_feature _IRR_LINUX_X11_XINPUT2_

cd ../../

# Copy Shaders
rm -rf client/shaders/Irrlicht
cp -r lib/irrlichtmt/media/Shaders client/shaders/Irrlicht

# Configure Minetest
mkdir build
cd build
cmake \
    -DCMAKE_BUILD_TYPE=Release \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DCMAKE_SYSTEM_PROCESSOR=aarch64 \
    -DCMAKE_C_COMPILER=aarch64-linux-gnu-gcc \
    -DCMAKE_CXX_COMPILER=aarch64-linux-gnu-g++ \
    -DENABLE_GLES=TRUE \
    -DENABLE_TOUCH=TRUE \
    -DRUN_IN_PLACE=FALSE \
    -DBUILD_UNITTESTS=FALSE \
    -DVERSION_EXTRA=mobile \
    ..

# Build
make -j$(nproc)

# Prepare
rm -rf tmp
mkdir tmp
rm -rf /out/*
mkdir -p /out

# Install Files
make install DESTDIR="$(pwd)/tmp"

# Prepare Debian
cp -r ../../DEBIAN tmp/DEBIAN
sed -i 's/${VERSION}/'"${DEB_VERSION}"'/g' tmp/DEBIAN/control

# Make DEB
dpkg -b tmp /out

# Clean Up
rm -rf tmp